The engine came with a choice from two power levels.

The sound of engines coming their way was easy enough to hear.

The engines came in three series, the 49a, 49b and 49c.

The engine came into life immediately, as it always did.

In late 1982 Max's engine came to life on its own.

The sound of an engine coming closer said it all.

Next came a 301cc engine built on a new platform.

I could hear the beat of the engine coming through the metal.

They could see the twin engine coming in on final approach.

That was the sound of multiple engines coming from the north.